Method of and means for supporting rotary drums.



A. B. HELBIG. METHOD OI AND MEANS FOR SUPPORTING ROTARY DRUMS.

APPLICATION IILIEIJ DBO. 22, 190B.

Patented NOV. 8, 1910.

2 SHEETS-SHEET 1.

Fig/a 'IIVVE/V 70R Ala/4v 852741040 1/5; 216

- War APPLICATION FILED DEG. 22, 190B.

Patented NOV. 8, 1910.

2 SHEETB-HEET 2.

4W JT kuwvi rray/#73 1 UNITED STATES P iTENT OFFICE.

ALBIN BEBTHOLD HELBIG, 0F F-RANKFORT-ON-THE-MAIN, GERMANY, ASSIGNOR TOTHE FIRM OF FELL-NER- & ZIEGLER, OF FBANKFORT -ON-THE-MAIN, GERMANY.

METHOD OF AND MEANS FOR SUPPORTING ROTARY DhUMS.

Specification of Letters Patent.

Application filed December 22, 1908. Serial No. 488,768.

' ed at both ends and when found necessary in the center also by pairsof rollers which are subjected to very great pressure. Such a rotarydrum, owing to the action of gravity would move downward during rotationif the axes of the supporting rollers were not inclinedat a small angleto the axis of the drum. This position of the rollers by iself wouldcause a spiral upward movement of the drum and this upward movement-andthe inclined position of the rollera'xes have to be so mutually adjustedwith regard to the inclination of the drum toward the horizontal, thatneither an upward nor a downward movement of the drum will result.

For this purpose the supporting rollers mustbe angularly adjustable. Butthis adjustment leads to two difiiculties. place as the surface lines ofthe supporting rollers are no longer parallel to the surface lines ofthe drum, therclis the danger that the drum will not rest or. the middleof the width of the supporting roller so as to obtain suflicient surfacecontact, but will bear X ter case pressures arise which in practice justthe several rollersto the same angle and onone edge only of the roller.In the lathave often led to the destruction of the rollers. In thesecond place it is diflicult to adto distribute the load equally betweenthem. The present invention is designed to overcome both thesedifliculties and to this end the adjustment of each roller in relationto the drum is effected in such mannertnat the rollers are automaticallycaused to re'- ceive the pressure at their mid-length and not on oneedgeonly, and each roller-bearing itself is movably mounted in such mannerthat it adjusts itself under the pressure of the drum. Thesimilarsimultaneous angular ad'ustment of all the rollers in relation tot e-drum is obtained by positively connecting together the carrierplates of all the roller hearings in such manner that they will alwaysstand under the same angle to the common base plate of the entire drum.

The invention will be described with reference to the accompanyingdrawing wherein- Figure 1 is a side view artly in section of a rotarydrum, that roller which is toward the spectator being shown in the caseof the lower pair,while in the case of'the upper pair the roller on theother side is,

shown. Fig. 2 is a plan view ofa set of four rollers. Fig. 3 shows,partly in section, the method of supporting one/i air of rollers drawnto a larger scale. i 4 shows a pair of roller supports viewe from above,only the bearin plate being shown in the case of the left and member ofthe pair, while the roller itself is shown in section in the case ofthe, right hand member.

Upoh the base I the bearing plates 2 are rotatably mounted on pivots'3.The bear ing plates 2 are provided with arms 4 which are connected byrods 5 in such manner that the whole of the bearing plates areconstrained to turn together on their respective pivots 3. The bearingplates 2 carrythe slides 6 each upon a segmental ide- 7. This guide isarranged in a plane (Big. 3) which;

passes through the drum axis 8 and through the roller axis 9 when thetwo axes are set' parallel to each other. The radius of curv'ature ofthe ide 7 is struck from'a center coincident with thecontact point 10between the roller 11 andthe drum- 12,'and the slide 6. can therefore beshifted Upon the guide 7 so that the roller is able to adjust itself. Inaddition, to the support affordedby the guide 7 the slide V6 issupported near; its.

upper part by two rods- 13 which, when the Patented Nov. 8, 1910. v

angular position of the bearing plates isw varied have for effect toinsurethat the axes 9 'o f'the rollersshall participate infthe somemovement. These rods 13 are arranged in such manner that when the axes 9are parallel with the axis 8 both of said axes 8 and 9 lie in the planeof the middle line of curva-' ture of the guide 7. The axis of the pivotwhen prolonged upward must also pass through the contact point 10 of'thedrum 12 with the supporting roller 11. Inthis man- 'ner a turningmovement of the bearing block 2 can take place without alteration in theposition of the point of support 10' while the drum will tend to ascendor descend upon 1 its supports occording as the bearing blocks are thusslewed'around. h

. The geometrical relations here given are those which represent thebest way of carrying out'the invention, but-"in practice there may,within certain limits, be deviations from mathematical accuracy.

It is obvious that each of the two arrangements, i. e. the way 1D wincheach supporting roller is mounted and the connection of the severalrollers by means of positively acting mechanism, can be usefullyemployed in' ependently of each other, but that these two arrangements,when employed in conjunction with one another, render each other mutualasslstance'of a special character and thus enable the'perfect object tobe obtained.

The automatlc adjustment of each slide '6 upon the-curved guide 7 is ofimportance also in case the furnace'should be heated while at rest, soas not to let it cool off beforethe next operation. Under thesecircumstances theupper'side of the furnace gets much hotter than thelower side and as a consequence a bendin of the drum results and the suporting r01 ers automatically ad- 'ustthemse ves according to: thecurvature.

urthermore, it would be possible to effect the automatic adjustment ofthe supporting rollers under the weight of the rotary drum during anangular variation in the position of the base lplate, by means of apositive adjustment w theaxis ofthe supporting roller,correspondingto'the turning movement of the bearing plates, would beproduced. It is further to remarked that the adjusting movementof'the'bearing block is the movement of a i universal 'oint, the twoaxesof which pass through I; e point of contact between the drum to be suported and the supporting "roller. 1 One 0 these axes is the which" maybe drawn through this contact and which passes through t tively to thecommon ase; The second axis vertical pointof e point at whichthe bearinglate is rotatable relapasses through the point of support in a idirection perpendicular to the plane of curvature 'of the segmentalguide. From this ,itnecessarily results that the line, upon the surfaceof the supportin roller, which asses through the point 0 en port of therum, always intersects the ongitudinal axial plane of the drum at thepoint of suprt P Now what I' claim and desire to secure by LettersPatent is the following:

7 '1. The combination of a rotary drum,

' supporting rollersvfor said drum, and means for changing'the relativeangle between each roller arms and the axis of the drum.

2. The combination of a rotary drum,

supporting rollers for said'drum, and means for changing the directionof each roller axis .while leaving the drum axis unchanged.

segmental guides in which. sai

movable and rods for engaging and supportereby a swinging movement of 3.The combination of a rotary drum, supportmgrollers for said drum, and anadjustable support for each roller, said ad-' just-inent being in theplane common to the roller axis and to the point of contact betweenroller and'drum.

4. The combination of a rotary drum, segmental guides, slides movable insaid guides and. rollers rotatably mounted on said slides for supportingsaid drum.

fijlhe combination of a rotary drum, rollers for supporting said drum,slides on which said rollers are rotatably mounted, and segmental guidesin which said slides are movable, the curve of each of said guidesbeing. struck from the oint of contact; be tween each roller and t edrum.

v 6. The combination of a-rotary drum, rollers for supporting said drum,slides on which said rollers are rotatabl mounted, slides are ing thesaid slides at their upper portions.

7. The combination of a rotary drum,

rollers for supporting'said drum, slides on which said rollers arerotatably mounted,

and segmental guides in which said slides are movable, said guides beingfixed to rotatable'bearin plates. 7

8. The com ination of a rotary drum, rollers for supporting said drum,slides on which said rollers are rotatably mounted, and segmental guidesin which said slides are movable, said guides being fixed to ro-'tatable bearing plates, and said plates being each rotatable about anaxis which extends through the point of contact between each roller andthe drum. 9. The combination of a rotary drum, rollers for supportingsaid drum, slides in which said rollers are rotatably mounted, segmentalguides in which said slides are movable, sald guides being fixed torotatable bearing plates, each of which is rotatable about anfaxis whichextends through the point of contact between each roller and the drumand rods connecting all of the plates together to cause said plates tomove in unison. Y

10. The combination of a rotary drum, supporting rollers for said drum,a support for each roller, a bearing plate for each sup port, means foradjusting said support circularly upon the bearing plate and means forindependently. adjusting said bearing plate circularly.

11. The combination of a drum, rollers for supporting said drum, movablesupports for said rollers and means for causing'all of said supports tomove in unison.

I 12. The combination of a drum, rollers for supporting said drum,supports for said 'rollers, rotatable plates'for carrying said supportsand connectionsbetween said plates to cause them all to move in unison.

13. The combination of a drum, rollera for supporting said drum, Hlltl'rotatable plates on which said rollers are mounted, said plates beingeach movable about an axis which extends through the point of Contactbetween the rollers and the drum.

14. The combination of a drum 1Oll0l for supporting said drum, andmtatable plates on which S1l(l.I0llC]S are mountcd, said plates beingeach movable about an axfls which extends' througln the point of cditaotbetween the rollers and the drum, and connections between each of saidplates to cause them all to move in unison.

15. The combination of a drum, rollers for supporting mid drum, bearingplates rotatably mounted on a base and supports for the said rollersrotatably mounted on the bearing plates.

In testimony. that I claim the foregoing as my invention I have signedmy name in presence of two WitIICSSOS this eighth day of December 1908.

J\TJI))IN llllli'lllOliD llELIlIG.

\Y itnesses:

I-lnmiuou Boos,

ALFRED Anwn'i.

